168333385 has 12 divisors (see below), whose sum is σ = 222033924. Its totient is φ = 122423840.

The previous prime is 168333383. The next prime is 168333397. The reversal of 168333385 is 583333861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90117049 + 78216336 = 9493^2 + 8844^2 .

It is not a de Polignac number, because 168333385 - 2¹ = 168333383 is a prime.

It is a super-2 number, since 2×168333385² = 56672257011116450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168333383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138514 + ... + 139723.

It is an arithmetic number, because the mean of its divisors is an integer number (18502827).

Almost surely, 2^168333385 is an apocalyptic number.

It is an amenable number.

168333385 is a deficient number, since it is larger than the sum of its proper divisors (53700539).

168333385 is a wasteful number, since it uses less digits than its factorization.

168333385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278264 (or 278253 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 168333385 is about 12974.3356284628. The cubic root of 168333385 is about 552.1495877323.

It can be divided in two parts, 1 and 68333385, that added together give a palindrome (68333386).

The spelling of 168333385 in words is "one hundred sixty-eight million, three hundred thirty-three thousand, three hundred eighty-five".